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How to use NSCache
...ign
// decision you'll have to make yourself.
myWidget = [[[Widget alloc] initExpensively] autorelease];
// Put it in the cache. It will stay there as long as the OS
// has room for it. It may be removed at any time, however,
// at which point we'll have to create it again on ne...
What happens with constraints when a view is removed
...hen I do something like this, I save the constraints like this for a view called view1:
self.portraitConstraints = [NSMutableArray new];
for (NSLayoutConstraint *con in self.view.constraints) {
if (con.firstItem == self.view1 || con.secondItem == self.view1) {
[self.portraitConstraints a...
How to make JavaScript execute after page load?
...ages, and subframes to finish loading. At this stage you could programmatically optimize loading of images and css based on user device or bandwidth speed.
Executes after DOM is loaded (before img and css):
document.addEventListener("DOMContentLoaded", function(){
//....
});
Note: Synchr...
background-size in shorthand background property (CSS3)
...you have in your question or my Code example. It's just not implemented in all browsers yet.
– Kraz
Oct 23 '11 at 6:37
...
Why Collections.sort uses merge sort instead of quicksort?
...to provide a stable sort (Merge Sort)
to sort object references. (Techincally speaking, multiple sequential
stable sorts result in a lexicographic ordering on the keys in the
reverse order of the sorts: the final sort determines the most
significant subkey.)
It's a nice side benefit tha...
Why sizeof int is wrong, while sizeof(int) is right?
...ans If we start trying to justify every decision made in C99 we'll be here all year. Quoting the standard is as good a way as any to wrap up this discussion.
– Perry
Oct 30 '12 at 18:50
...
What are the file limits in Git (number and size)?
...m Linus himself can help you with some other limits
[...] CVS, ie it really ends up being pretty much oriented to a "one file
at a time" model.
Which is nice in that you can have a million files, and then only check
out a few of them - you'll never even see the impact of the other
999...
Bash conditionals: how to “and” expressions? (if [ ! -z $VAR && -e $VAR ])
...te easily handle empty strings. If that's what you want then you don't actually need the -z non-empty check:
pax> VAR=xyzzy
pax> if [[ -e $VAR ]] ; then echo yes ; fi
pax> VAR=/tmp
pax> if [[ -e $VAR ]] ; then echo yes ; fi
yes
In other words, just use:
if [[ -e "$var" ]] ; then
...
Difference between Document-based and Key/Value-based databases?
...e debate on the correct name for databases such as Cassandra, I'd like to call them column-family stores. Although key-value pairs are an essential part of Cassandra, it's not limited to just that. It allows you to nest key-value pairs, so a key could refer to multiple sub-key-value pairs.
You cann...
How can I get the full object in Node.js's console.log(), rather than '[Object]'?
...console.log(obj) it still prints [Object] for deeply nested objects :( I really wish it would behave as you describe.
– SSH This
Feb 23 '16 at 22:36
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